19775920

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1381}}^1$

素因数の和:1573

約数の個数: 40

約数和(自身を含む): 46269360

約数和(自身を除く): 26493440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1381, 1432, 1790, 2762, 2864, 3580, 5524, 6905, 7160, 11048, 13810, 14320, 22096, 27620, 55240, 110480, 247199, 494398, 988796, 1235995, 1977592, 2471990, 3955184, 4943980, 9887960, 19775920]

約数ペア:

[(1, 19775920), (2, 9887960), (4, 4943980), (5, 3955184), (8, 2471990), (10, 1977592), (16, 1235995), (20, 988796), (40, 494398), (80, 247199), (179, 110480), (358, 55240), (716, 27620), (895, 22096), (1381, 14320), (1432, 13810), (1790, 11048), (2762, 7160), (2864, 6905), (3580, 5524)]